An electronic anti-theft device for laptop computers

Abstract

The present invention provides an electronic anti-theft device for a laptop computer, which includes a fixed base and a moving component. There are two sets of moving components, and one end of each of the two sets of moving components is connected with a claw. A guide rail base is commonly connected between the two sets of moving components, and locking components for locking the moving components are installed at both ends of the guide rail base; the guide rail base and the two sets of moving components are both installed inside the fixed base; a circuit board and an electric locking component are fixedly installed inside the guide rail base, and an induction component for detecting the state of the electric locking component and an alarm for alarming are installed on one side of the circuit board. By using the moving component in cooperation with the claw, the present invention can quickly clamp and fix various models of laptop computers on the market at present. After clamping, the moving component is quickly fixed on the guide rail base and the fixed base by the locking component, so as to ensure that the laptop computer has high stability during display and placement, is not prone to falling, and is conducive to safe and stable display.

Description

Technical Field

[0001] The invention belongs to the technical field of electronic product anti-theft devices, and more specifically, particularly relates to an electronic anti-theft device for a notebook computer. Background Art

[0002] When laptops are sold offline, they are usually placed on the sales counter for display so that customers can personally experience the operation of the product, such as trying the feel of the keyboard, the sensitivity of the touch screen, and feeling the operating speed of the system, etc., so as to better understand the advantages and value of the product and enhance customers' recognition of the product and willingness to buy.

[0003] In order to prevent theft when the laptop is on display, it is usually locked with a laptop lock. However, when the laptop is locked, the laptop is connected to the lock hole of the laptop by a lock cable and a lock buckle. During the actual display, if the criminals use tools to damage the lock cable and the staff does not notice their behavior, the laptop is easily stolen. At the same time, since the lock cable cannot stably fix the laptop on the display table, consumers can easily pick it up. When picking it up, there is a risk that the laptop will fall from the hand, which is easy to cause economic losses and disputes. Therefore, in view of this, the existing structure and defects are studied and improved, and an electronic anti-theft device for laptops is provided, in order to achieve a more practical purpose. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an electronic anti-theft device for a laptop computer, which is achieved by the following specific technical means:

[0005] An electronic anti-theft device for a laptop computer comprises a fixed base and a mobile component, wherein two groups of mobile components are provided, and one end of each of the two groups of mobile components is connected with a claw, and the claw is used for locking and connecting with the screen of the laptop computer; a guide rail seat is commonly connected between the two groups of mobile components, and locking components for locking the mobile components are installed at both ends of the guide rail seat; the guide rail seat and the two groups of mobile components are installed on the inner side of the fixed base, and the side walls of the two groups of mobile components are respectively slidably fitted with the inner side walls of the fixed base; a circuit board and an electric locking component are fixedly installed inside the guide rail seat, and a sensing component for detecting the state of the electric locking component and an alarm for alarming are installed on one side of the circuit board.

[0006] Further, the moving component includes a moving seat, with limit blocks provided at one end of the moving seat, and connection holes provided on the side close to the limit blocks; the claw includes a substrate, with a front clamping plate and a rear clamping plate provided at the top of the substrate, and a supporting plate obliquely provided at the bottom side close to the rear clamping plate. Connection shafts are provided on one side of the bottom end of the substrate, and the connection shafts are rotatably connected to the connection holes.

[0007] Further, limit convex strips are provided on both sides of the top of the guide rail seat, and limit sliding grooves slidably connected to the limit convex strips are provided on the inner top side of the moving seat; a toothed groove is provided on the inner side wall of the moving seat; an installation groove is provided on the side of the guide rail seat close to the toothed groove, and a through hole is provided at the center of the installation groove; the locking component includes a pressing shaft installed inside the through hole, with a toothed plate fixedly connected to one end of the pressing shaft. The toothed plate matches the toothed groove and can be locked with each other; springs are sleeved on the outer sides of the pressing shafts, and the two ends of the springs are respectively abutted against the installation groove and the toothed plate.

[0008] Further, two groups of limit pins are fixedly installed at the top end of the guide rail seat, and limit grooves slidably connected to the limit pins are provided on the inner top side of the moving seat.

[0009] Further, a bottom cover is installed at the center of the bottom of the guide rail seat through fasteners, and the circuit board and the electric locking component are both fixedly installed on the top side of the bottom cover; the electric locking component includes a reduction motor and an electronic lock; the output shaft of the reduction motor is fixedly connected with a gear, and a rack is meshed with the top side of the gear. The top surface of the rack is slidably connected to the inner top surface of the guide rail seat; sliders are provided at both ends of the bottom of the rack, and a locking pin is provided on the outside of one group of the sliders. The guide rail seat is provided with a through hole for the locking pin to pass through, and a lock hole is provided on the inner side of the fixed base corresponding to the locking pin; a guide groove slidably connected to the slider is provided on the top side of the bottom cover.

[0010] Further, the sensing component includes a contact switch one and a contact switch two. The contact switch one and the contact switch two are respectively fixedly installed on the front and rear sides of the circuit board and are respectively located at the upper and lower ends of the position where the through groove is opened on the circuit board; a through groove is provided on one side of the circuit board, and the rack is installed in the through groove. A contact block is provided at the top of the rack, and the contact block is used to contact the contact switch one. The contact switch two is correspondingly arranged with the other group of sliders at the bottom of the rack.

[0011] Further, the electric locking component further includes an electronic key wirelessly connected to the electronic lock. The electronic lock is electrically connected to the circuit board; the alarm is electrically connected to the circuit board.

[0012] Further, a plurality of fixing screws are fixedly connected to the bottom of the fixed base, and wing nuts are threadedly connected to the outside of each group of fixing screws.

[0013] Furthermore, a double-sided adhesive is fixedly bonded to the bottom surface of the fixed base.

[0014] Furthermore, connecting grooves are symmetrically arranged at both ends of the bottom of the fixed base, and a limiting step is arranged at one end of the connecting groove; a fixing member is installed inside the connecting groove, the fixing member is Z-shaped, one end is limited and engaged with the limiting step, and the other end is installed inside the connecting groove and is fixedly connected to the bottom of the guide rail base through a fastening screw.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. By the cooperative use of the moving component and the claw, the present invention can realize the quick clamping and fixing of various models of notebook computers on the existing market, has high applicability, and after clamping, the moving component is quickly fixed on the guide rail base and the fixed base by the locking component to ensure that the notebook computer has high stability during display placement and is not prone to falling, which is beneficial to safe and stable display;

[0017] 2. Through the setting of the electric locking component, the present invention can realize the quick locking and fixing of the guide rail base after it is installed in the fixed base. At the same time, through the cooperation of the induction component, the circuit board and the alarm, it can realize the quick alarm when the state of the guide rail base is abnormal to remind relevant staff and prevent the theft of the notebook computer, which has high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the schematic diagram of the overall structure of the present invention Figure 1 .

[0019] Figure 2 is the schematic diagram of the overall structure of the present invention Figure 2 .

[0020] Figure 3 is the schematic diagram of the overall structure of the present invention Figure 3 .

[0021] Figure 4 is the schematic diagram of the disassembled structure of the present invention Figure 1 .

[0022] Figure 5 is the schematic diagram of the disassembled structure of the present invention Figure 2 .

[0023] Figure 6 is the schematic diagram of the disassembled structure of the present invention Figure 3 .

[0024] Figure 7 is the schematic diagram of the disassembled structure of the present invention Figure 4 .

[0025] Figure 8 It is a schematic structural diagram of the bottom cover and the electric locking component of the present invention.

[0026] Figure 9 It is a front view schematic diagram of the present invention.

[0027] Figure 10 It is Figure 9 a schematic diagram of the A-A cross-section in

[0028] Figure 11 It is Figure 9 a schematic diagram of the B-B cross-section in

[0029] Figure 12 a schematic diagram of the moving component structure of the present invention Figure 1 .

[0030] Figure 13 a schematic diagram of the moving component structure of the present invention Figure 2 .

[0031] Figure 14 It is a schematic diagram of the claw structure of the present invention.

[0032] Figure 15 It is a schematic diagram before locking the laptop computer of the present invention.

[0033] Figure 16 It is a schematic diagram after locking the laptop computer of the present invention Figure 1 .

[0034] Figure 17 It is a schematic diagram after locking the laptop computer of the present invention Figure 2 .

[0035] In the figure, the corresponding relationship between the component names and the drawing numbers is as follows:

[0036] 1. Fixed base; 2. Guide rail base; 3. Moving component; 4. Claw; 5. Fixed screw; 6. Wing nut; 7. Bottom cover; 8. Reduction motor; 9. Rack; 10. Circuit board; 11. Electronic lock; 12. Tooth plate; 13. Tightening shaft; 14. Spring; 15. Gear; 16. Locking pin; 17. Contact switch one; 18. Contact switch two; 19. Limit pin; 20. Fixed part; 21. Alarm; 22. Electronic key;

[0037] 101. Connection groove; 102. Limit step;

[0038] 301. Moving seat; 302. Limit block; 303. Connection hole; 304. Tooth groove; 305. Limit groove;

[0039] 401. Substrate; 402. Front clamping plate; 403. Rear clamping plate; 404. Support plate; 405. Connection shaft. Detailed implementation method

[0040] The embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0041] In the description of the present invention, unless otherwise specified, "a plurality of" means two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0043] Embodiment:

[0044] As shown in the attached Figure 1 to the attached Figure 17 figure:

[0045] The present invention provides an electronic anti-theft device for a notebook computer, including a fixed base 1 and a moving component 3. There are two sets of the moving components 3, and one end of each of the two sets of the moving components 3 is connected with a claw 4. The claw 4 is used for locking and connecting with the screen of the notebook computer. A guide rail seat 2 is commonly connected between the two sets of the moving components 3. Locking components for locking the moving components 3 are installed at both ends of the guide rail seat 2; the guide rail seat 2 and the two sets of the moving components 3 are both installed inside the fixed base 1, and the side walls of the two sets of the moving components 3 are respectively in sliding fit with the inner side wall of the fixed base 1; a circuit board 10 and an electric locking component are fixedly installed inside the guide rail seat 2. An induction component for detecting the state of the electric locking component and an alarm 21 for alarming are installed on one side of the circuit board 10.

[0046] Among them, the moving component 3 includes a moving seat 301. Limit blocks 302 are provided at one end of the moving seat 301, and connection holes 303 are provided on one side close to the limit blocks 302. By providing the limit blocks 302, the rotation angle of the claw 4 can be restricted. The limit blocks 302 are triangular prisms and are integrally structured with the moving seat 301; the claw 4 includes a base plate 401. A front clamping plate 402 and a rear clamping plate 403 are provided at the top of the base plate 401, and a supporting plate 404 is inclinedly provided at the bottom side close to the rear clamping plate 403. The supporting plate 404 can lift the main body of the notebook to ensure that the keyboard at its top is in an inclined state, thereby facilitating the use by consumers; connection shafts 405 are provided at one side of the bottom end of the base plate 401. The connection shafts 405 are rotatably connected to the connection holes 303 to facilitate the angle adjustment of the claw 4, facilitate the angle adjustment and folding of the notebook computer screen when clamping the notebook computer screen, so as to provide a better experience for consumers; a limit flange is connected to one end of the connection shaft 405 to prevent the connection shaft 405 from disengaging from the connection hole 303.

[0047] Among them, limit ribs are provided on both sides of the top of the guide rail seat 2. A limit sliding groove slidably connected to the limit ribs is provided on the inner top side of the moving seat 301, so that after the moving seat 301 is connected to the guide rail seat 2, it has high stability to prevent position deviation during movement; a tooth groove 304 is provided on the inner side wall of the moving seat 301; an installation groove is provided on one side of the guide rail seat 2 close to the tooth groove 304, and a through hole is provided at the center of the installation groove; the locking component includes a pressing shaft 13 installed inside the through hole. One end of the pressing shaft 13 is fixedly connected with a tooth plate 12. The tooth plate 12 is matched with the tooth groove 304 and can be locked with each other. After the guide rail seat 2 and the moving component 3 are installed in the fixed base 1, one end of the pressing shaft 13 abuts against the inner side surface of the fixed base 1, and the tooth plate 12 connected to the other end of the pressing shaft 13 is locked and connected with the tooth groove 304 of the moving seat 301 to ensure that the moving seat 301 will not move, thereby realizing stable locking; springs 14 are sleeved on the outer sides of the pressing shafts 13, and both ends of the springs 14 abut against the installation groove and the tooth plate 12 respectively. Through the setting of the springs 14, when the moving seat 301 slides and adjusts on the guide rail seat 2, it can drive the tooth plate 12 to move on the tooth groove 304 and then quickly and automatically fit, so as to ensure high stability before being installed in the fixed base 1, facilitating installation and use.

[0048] Among them, two groups of limit pins 19 are fixedly installed at the top of the guide rail seat 2. A limit groove 305 slidably connected to the limit pins 19 is provided on the inner top side of the moving seat 301 to facilitate the restriction of the moving distance of the moving seat 301 to prevent the moving seat 301 from disengaging in case of operation errors.

[0049] Among them, the bottom center of the guide rail base 2 is installed with a bottom cover 7 through fasteners, and the circuit board 10 and the electric locking assembly are both fixedly installed on the top side of the bottom cover 7; the electric locking assembly includes a reduction motor 8 and an electronic lock 11; the output shaft of the reduction motor 8 is fixedly connected with a gear 15, the top side of the gear 15 is engaged with a rack 9, and the top surface of the rack 9 is slidably connected with the inner top surface of the guide rail base 2; both ends of the bottom of the rack 9 are provided with sliders, and a locking pin 16 is arranged on the outer side of one group of the sliders. The guide rail base 2 is provided with a through hole for the locking pin 16 to pass through, and a lock hole is arranged on the inner side of the fixed base 1 corresponding to the locking pin 16, so that the two can be quickly connected and separated to realize locking and unlocking; a guide groove slidably connected with the slider is arranged on the top side of the bottom cover 7 to ensure that the rack 9 has high stability and accuracy during operation.

[0050] Among them, the induction assembly includes a first contact switch 17 and a second contact switch 18. The first contact switch 17 and the second contact switch 18 are respectively fixedly installed on the front and rear sides of the circuit board 10 and are respectively located at the upper and lower ends of the position where the through groove is opened on the circuit board 10; a through groove is arranged on one side of the circuit board 10, and the rack 9 is installed in the through groove. A contact block is arranged on the top of the rack 9, and the contact block is used to contact the first contact switch 17. The second contact switch 18 is arranged corresponding to the other group of sliders at the bottom of the rack 9. Through the arrangement of the first contact switch 17 and the second contact switch 18, the position of the rack 9 can be quickly detected. When the contact block at the top of the rack 9 contacts the first contact switch 17, the rack 9 is in the retracted state, and at this time the locking pin 16 is separated from the lock hole. When the slider at the bottom of the rack 9 contacts the second contact switch 18, the rack 9 is in the extended state, and at this time one end of the locking pin 16 is inserted into the lock hole to enter the locked state; when locking, if an external force is applied to drag the guide rail base 2 to separate it from the fixed base 1, the locking pin 16 will move to drive the rack 9 to move, and the slider of the rack 9 is separated from the second contact switch 18. At this time, it is an abnormal state. Through the action of the circuit board 10, the alarm 21 can be quickly started to give an alarm.

[0051] Among them, the electric locking assembly further includes an electronic key 22 wirelessly connected to the electronic lock 11. The electronic lock 11 is electrically connected to the circuit board 10. Through the arrangement of the electronic lock 11 and the electronic key 22, the device can be quickly locked and unlocked, and has high operation convenience; the alarm 21 is electrically connected to the circuit board 10 to facilitate quick alarm operation when the device is in an abnormal state.

[0052] Among them, a plurality of fixing screws 5 are fixedly connected to the bottom of the fixed base 1, and a wing nut 6 is threadedly connected to the outside of each fixing screw 5, so as to quickly fix the whole device to the display table by means of the fixing screws 5 and the wing nuts 6 during use.

[0053] Among them, a double-sided adhesive is fixedly bonded to the bottom surface of the fixed base 1, so as to facilitate quick adhesive installation when it is inconvenient to drill holes and fix on the display tabletop. The installation method is diverse, which is convenient for users to flexibly select.

[0054] Among them, connecting grooves 101 are symmetrically arranged at both ends of the bottom of the fixed base 1, and a limiting step 102 is arranged at one end of the connecting groove 101; a fixing member 20 is installed inside the connecting groove 101. The fixing member 20 is Z-shaped, one end of which is in limit engagement with the limiting step 102, and the other end is installed inside the connecting groove 101 and is fixedly connected to the bottom of the guide rail seat 2 through a fastening screw. Through the arrangement of the fixing member 20, it is convenient for users to selectively strengthen the installation strength of the guide rail seat 2 according to actual needs during use, so as to improve the stability of the overall structure.

[0055] The working principle of this embodiment: During use, the fixed base 1 can be fixed on the display tabletop through the fixing screw 5 or double-sided adhesive; then move the two groups of moving components 3 to expand them on the guide rail seat 2, and then unfold the notebook computer, place the two ends of its bottom on the supporting plate 404, and place the screen of the notebook computer between the front clamping plate 402 and the rear clamping plate 403 of the clamping claw 4. Then push the moving component 3 in the reverse direction to move until the inner side of the substrate 401 of the clamping claw 4 is closely attached to the outer side of the screen; then install the guide rail seat 2 into the fixed base 1. At this time, the end of the abutting shaft 13 can be closely attached to the inner wall of the fixed base 1, and the toothed plate 12 is stably connected to the tooth groove 304 of the moving seat 301 and cannot move. At this time, the moving component 3 cannot be pulled; then align the electronic key 22 with the installation position of the electronic lock 11 and send a locking instruction. At this time, the reduction motor 8 drives the gear 15 to drive the rack 9 to move, so that the locking pin 16 at one end of the rack 9 is inserted into the lock hole of the fixed base 1 for locking, ensuring that the guide rail seat 2 is stably placed in the fixed base 1. Conversely, it can also be unlocked through the electronic key 22; when the locking pin 16 is in the locked state, if an external force is applied to drag the guide rail seat 2 to separate it from the fixed base 1, the locking pin 16 will move to drive the rack 9 to move, and the slider of the rack 9 is separated from the contact switch II 18. At this time, it is an abnormal state. Through the action of the circuit board 10, the alarm 21 can be quickly started to give an alarm to remind relevant staff to prevent the notebook computer from being stolen, which has high security.

[0056] The embodiments of the present invention are provided by way of example and description, and are not exhaustive or limit the invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application, and to enable those of ordinary skill in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. An electronic anti-theft device for a laptop computer, comprising a fixed base (1) and a moving component (3). There are two sets of the moving components (3), and one end of each of the two sets of moving components (3) is connected with a claw (4). The claw (4) is used for locking and connecting with the screen of the laptop computer, and is characterized in that: A guide rail base (2) is commonly connected between the two sets of the moving components (3). Locking components for locking the moving components (3) are installed at both ends of the guide rail base (2). The guide rail base (2) and the two sets of the moving components (3) are all installed inside a fixed base (1), and the side walls of the two sets of the moving components (3) are respectively in sliding fit with the inner side wall of the fixed base (1). A circuit board (10) and an electric locking component are fixedly installed inside the guide rail base (2). On one side of the circuit board (10), an induction component for detecting the state of the electric locking component and an alarm (21) for alarming are installed. The bottom center of the guide rail base (2) is installed with a bottom cover (7) through a fastener, and the circuit board (10) and the electric locking component are both fixedly installed on the top side of the bottom cover (7). The electric locking component includes a reduction motor (8) and an electronic lock (11). The output shaft of the reduction motor (8) is fixedly connected with a gear (15), the top side of the gear (15) is engaged with a rack (9), and the top surface of the rack (9) is in sliding connection with the inner top surface of the guide rail base (2). Sliders are arranged at both ends of the bottom of the rack (9), and a locking pin (16) is arranged outside one set of the sliders. The guide rail base (2) is provided with a through hole for the locking pin (16) to pass through, and the inner side of the fixed base (1) is provided with a locking hole corresponding to the locking pin (16). Guide grooves in sliding connection with the sliders are arranged on the top side of the bottom cover (7). The induction component includes a first contact switch (17) and a second contact switch (18). The first contact switch (17) and the second contact switch (18) are respectively fixedly installed on the front and rear sides of the circuit board (10) and are respectively located at the upper and lower ends of the position where the circuit board (10) is provided with a through slot. A through slot is arranged on one side of the circuit board (10), and the rack (9) is installed in the through slot. A contact block is arranged at the top of the rack (9), and the contact block is used for contacting with the first contact switch (17). The second contact switch (18) is correspondingly arranged with the other set of sliders at the bottom of the rack (9).

2. The laptop electronic anti-theft device according to claim 1, characterized in that: The moving component (3) includes a moving seat (301). Limit blocks (302) are arranged at one end of the moving seat (301), and a connection hole (303) is arranged on the side close to the limit block (302). The claw (4) includes a substrate (401). A front clamping plate (402) and a rear clamping plate (403) are arranged at the top end of the substrate (401), and a supporting plate (404) is inclinedly arranged at the bottom side close to the rear clamping plate (403). Connection shafts (405) are arranged at one side of the bottom end of the substrate (401), and the connection shafts (405) are rotationally connected with the connection holes (303).

3. The laptop electronic anti-theft device according to claim 2, characterized in that: On both sides of the top of the guide rail base (2), there are provided limit convex strips, and on the inner top side of the moving base (301), there is provided a limit sliding groove that is slidably connected to the limit convex strips; on the inner side wall of the moving base (301), there is provided a tooth groove (304); on one side of the guide rail base (2) close to the tooth groove (304), there is provided an installation groove, and a through hole is provided at the center of the installation groove; the locking assembly includes a pressing shaft (13) installed inside the through hole, one end of the pressing shaft (13) is fixedly connected to a tooth plate (12), the tooth plate (12) matches the tooth groove (304) and can be locked with each other; springs (14) are sleeved on the outer sides of the pressing shafts (13), and both ends of the springs (14) are respectively abutted against the installation groove and the tooth plate (12).

4. The laptop electronic anti-theft device according to claim 2, characterized in that: At the top end of the guide rail base (2), two groups of limit pins (19) are fixedly installed, and on the inner top side of the moving base (301), there is provided a limit groove (305) that is slidably connected to the limit pins (19).

5. The laptop electronic anti-theft device according to claim 1, characterized in that: The electric locking assembly further includes an electronic key (22) that is wirelessly connected to the electronic lock (11), the electronic lock (11) is electrically connected to the circuit board (10); the alarm (21) is electrically connected to the circuit board (10).

6. The laptop electronic anti-theft device according to claim 1, characterized in that: At the bottom of the fixed base (1), a plurality of fixed screws (5) are fixedly connected, and on the outer sides of each group of fixed screws (5), a wing nut (6) is threadedly connected.

7. The laptop electronic anti-theft device according to claim 1, characterized in that: On the bottom surface of the fixed base (1), a double-sided adhesive is fixedly adhered.

8. The laptop electronic anti-theft device according to claim 1, characterized in that: At both ends of the bottom of the fixed base (1), connection grooves (101) are symmetrically provided, and at one end of the connection groove (101), there is provided a limit step (102); a fixing member (20) is installed inside the connection groove (101), the fixing member (20) is Z-shaped, one end is limit-fittingly engaged with the limit step (102), and the other end is installed inside the connection groove (101) and is fixedly connected to the bottom of the guide rail base (2) through a fastening screw.

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